IOTA/IOTA-ES occultation update for (1407) Lindelof / UCAC4 490-052578 event on 2024 Nov 20, 05:41 UT Visible from Summary ------- On 2024 Nov 20 UT, the 21.076 km diameter asteroid (1407) Lindelof will occult a 10.2 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.08 mag to 16.32 mag (the magnitude of the asteroid) for at most 1.430 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2024 Nov 20, 05:35 - 2024 Nov 20, 05:48 * geocentric midpoint of event [JD]: 2460634.73742495 * magnitude of target star: 10.24 * magnitude drop [mag]: 6.08 * estimated maximum duration [s]: 1.430 * Moon: 77 % sunlit, 36° distance * Sun: 89° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.28 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.003", 113°) * approx speed of asteroid's shadow [km/s]: 14.7127 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 490-052578 by 1407 Lindelof on 2024 Nov 20 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 84 0 0 10 51 27 5 35 9.8 1 82 -80 10 45 16 10 57 37 10 41 51 11 1 1 .... - 83 0 0 10 59 4 5 35 10.0 2 82 -80 10 52 54 11 5 14 10 49 29 11 8 38 0.24 - 82 0 0 11 6 5 5 35 10.3 3 83 -80 10 59 55 11 12 14 10 56 31 11 15 38 0.30 - 81 0 0 11 12 30 5 35 10.7 4 83 -79 11 6 20 11 18 39 11 2 56 11 22 3 0.32 - 80 0 0 11 18 19 5 35 11.3 5 83 -79 11 12 9 11 24 27 11 8 46 11 27 51 0.34 - 79 0 0 11 23 31 5 35 12.0 6 83 -78 11 17 22 11 29 40 11 13 59 11 33 3 0.35 - 78 0 0 11 28 7 5 35 12.9 7 83 -78 11 21 59 11 34 16 11 18 35 11 37 39 0.35 - 77 0 0 11 32 7 5 35 13.8 8 83 -77 11 25 59 11 38 15 11 22 35 11 41 38 0.36 - 76 0 0 11 35 31 5 35 15.0 9 84 -76 11 29 23 11 41 39 11 25 59 11 45 2 0.36 - 75 0 0 11 38 18 5 35 16.2 10 84 -75 11 32 10 11 44 26 11 28 47 11 47 49 0.37 - 74 0 0 11 40 29 5 35 17.6 10 84 -75 11 34 21 11 46 37 11 30 58 11 49 59 0.37 - 73 0 0 11 42 3 5 35 19.1 11 84 -74 11 35 55 11 48 11 11 32 32 11 51 34 0.37 - 72 0 0 11 43 1 5 35 20.8 12 84 -73 11 36 53 11 49 9 11 33 30 11 52 32 0.37 - 71 0 0 11 43 22 5 35 22.6 13 85 -72 11 37 15 11 49 30 11 33 51 11 52 53 0.37 - 70 0 0 11 43 7 5 35 24.5 14 85 -71 11 36 59 11 49 15 11 33 36 11 52 38 0.38 - 69 0 0 11 42 15 5 35 26.6 15 85 -70 11 36 7 11 48 23 11 32 44 11 51 46 0.38 - 68 0 0 11 40 46 5 35 28.8 16 85 -70 11 34 38 11 46 54 11 31 15 11 50 17 0.38 - 67 0 0 11 38 41 5 35 31.1 17 85 -69 11 32 33 11 44 49 11 29 9 11 48 12 0.38 - 66 0 0 11 35 58 5 35 33.6 18 85 -68 11 29 50 11 42 7 11 26 26 11 45 30 0.38 - 65 0 0 11 32 39 5 35 36.2 19 86 -67 11 26 30 11 38 48 11 23 7 11 42 11 0.38 - 64 0 0 11 28 43 5 35 38.9 20 86 -66 11 22 34 11 34 52 11 19 10 11 38 15 0.38 - 63 0 0 11 24 9 5 35 41.8 21 86 -65 11 18 0 11 30 18 11 14 36 11 33 42 0.38 - 62 0 0 11 18 58 5 35 44.8 22 86 -64 11 12 48 11 25 8 11 9 24 11 28 32 0.38 - 61 0 0 11 13 10 5 35 47.9 23 86 -63 11 7 0 11 19 20 11 3 35 11 22 44 0.39 - 60 0 0 11 6 44 5 35 51.2 24 86 -62 11 0 34 11 12 55 10 57 9 11 16 19 0.39 - 59 0 0 10 59 41 5 35 54.6 25 86 -61 10 53 30 11 5 52 10 50 5 11 9 17 0.39 - 58 0 0 10 52 0 5 35 58.1 26 87 -60 10 45 49 10 58 12 10 42 23 11 1 37 0.39 - 57 0 0 10 43 42 5 36 1.8 27 87 -59 10 37 29 10 49 54 10 34 4 10 53 19 0.39 - 56 0 0 10 34 45 5 36 5.6 28 87 -58 10 28 32 10 40 58 10 25 6 10 44 24 0.39 - 55 0 0 10 25 11 5 36 9.5 29 87 -57 10 18 57 10 31 24 10 15 31 10 34 50 0.39 - 54 0 0 10 14 59 5 36 13.6 30 87 -56 10 8 44 10 21 13 10 5 18 10 24 39 0.39 - 53 0 0 10 4 8 5 36 17.8 31 87 -55 9 57 53 10 10 23 9 54 26 10 13 49 0.39 - 52 0 0 9 52 39 5 36 22.2 32 87 -54 9 46 23 9 58 54 9 42 56 10 2 22 0.39 - 51 0 0 9 40 32 5 36 26.7 33 87 -53 9 34 15 9 46 48 9 30 47 9 50 16 0.39 - 50 0 0 9 27 46 5 36 31.3 34 87 -52 9 21 28 9 34 3 9 18 0 9 37 31 0.39 - 49 0 0 9 14 21 5 36 36.0 35 87 -51 9 8 3 9 20 39 9 4 34 9 24 8 0.39 - 48 0 0 9 0 18 5 36 40.9 36 87 -50 8 53 59 9 6 37 8 50 29 9 10 6 0.39 - 47 0 0 8 45 36 5 36 46.0 37 87 -49 8 39 15 8 51 56 8 35 46 8 55 25 0.39 - 46 0 0 8 30 15 5 36 51.1 38 87 -48 8 23 53 8 36 36 8 20 23 8 40 6 0.39 - 45 0 0 8 14 15 5 36 56.4 39 87 -47 8 7 52 8 20 37 8 4 21 8 24 7 0.39 - 44 0 0 7 57 35 5 37 1.8 40 86 -46 7 51 12 8 3 59 7 47 40 8 7 30 0.39 - 43 0 0 7 40 17 5 37 7.4 41 86 -45 7 33 53 7 46 41 7 30 20 7 50 13 0.39 - 42 0 0 7 22 19 5 37 13.1 42 86 -44 7 15 54 7 28 45 7 12 21 7 32 17 0.39 - 41 0 0 7 3 43 5 37 18.9 43 86 -43 6 57 16 7 10 9 6 53 42 7 13 42 0.39 - 40 0 0 6 44 26 5 37 24.9 44 86 -42 6 37 58 6 50 54 6 34 24 6 54 28 0.39 - 39 0 0 6 24 30 5 37 31.0 45 85 -41 6 18 1 6 31 0 6 14 26 6 34 34 0.39 - 38 0 0 6 3 55 5 37 37.2 46 85 -40 5 57 25 6 10 26 5 53 49 6 14 1 0.39 - 37 0 0 5 42 41 5 37 43.6 47 85 -39 5 36 9 5 49 13 5 32 32 5 52 49 0.39 - 36 0 0 5 20 47 5 37 50.1 48 84 -37 5 14 13 5 27 20 5 10 36 5 30 57 0.39 - 35 0 0 4 58 14 5 37 56.7 49 84 -36 4 51 39 5 4 48 4 48 1 5 8 26 0.39 - 34 0 0 4 35 1 5 38 3.5 50 83 -35 4 28 25 4 41 37 4 24 46 4 45 15 0.39 - 33 0 0 4 11 9 5 38 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50 11 - 2 7 58 - 1 46 20 0.39 - 19 0 0 - 2 29 45 5 39 59.0 63 67 -18 - 2 36 45 - 2 22 45 - 2 40 37 - 2 18 54 0.39 - 18 0 0 - 3 2 55 5 40 7.5 64 65 -17 - 3 9 57 - 2 55 54 - 3 13 50 - 2 52 1 0.39 - 17 0 0 - 3 36 39 5 40 16.1 65 63 -16 - 3 43 42 - 3 29 36 - 3 47 36 - 3 25 43 0.39 - 16 0 0 - 4 10 55 5 40 24.8 65 61 -15 - 4 18 1 - 4 3 51 - 4 21 55 - 3 59 57 0.39 - 15 0 0 - 4 45 44 5 40 33.5 66 59 -14 - 4 52 51 - 4 38 37 - 4 56 46 - 4 34 42 0.39 - 14 0 0 - 5 21 3 5 40 42.3 67 56 -12 - 5 28 12 - 5 13 55 - 5 32 8 - 5 9 59 0.39 - 13 0 0 - 5 56 53 5 40 51.2 67 53 -11 - 6 4 3 - 5 49 43 - 6 8 1 - 5 45 47 0.39 - 12 0 0 - 6 33 12 5 41 0.2 67 51 -10 - 6 40 24 - 6 26 1 - 6 44 22 - 6 22 3 0.39 - 11 0 0 - 7 9 59 5 41 9.2 68 48 -9 - 7 17 12 - 7 2 46 - 7 21 12 - 6 58 48 0.39 - 10 0 0 - 7 47 13 5 41 18.2 68 45 -8 - 7 54 28 - 7 39 59 - 7 58 28 - 7 36 0 0.39 - 9 0 0 - 8 24 54 5 41 27.3 68 42 -7 - 8 32 10 - 8 17 38 - 8 36 11 - 8 13 38 0.39 - 8 0 0 - 9 2 59 5 41 36.4 69 39 -5 - 9 10 17 - 8 55 42 - 9 14 19 - 8 51 40 0.39 - 7 0 0 - 9 41 28 5 41 45.5 69 35 -4 - 9 48 47 - 9 34 9 - 9 52 50 - 9 30 7 0.39 - 6 0 0 -10 20 19 5 41 54.6 69 32 -3 -10 27 40 -10 12 59 -10 31 43 -10 8 56 0.39 - 5 0 0 -10 59 31 5 42 3.8 69 29 -2 -11 6 53 -10 52 10 -11 10 58 -10 48 6 0.39 - 4 0 0 -11 39 3 5 42 12.9 69 25 -1 -11 46 27 -11 31 40 -11 50 31 -11 27 36 0.39 - 3 0 0 -12 18 53 5 42 22.1 68 22 1 -12 26 18 -12 11 29 -12 30 24 -12 7 24 0.39 - 2 0 0 -12 59 0 5 42 31.2 68 19 2 -13 6 26 -12 51 35 -13 10 32 -12 47 29 0.39 - 1 0 0 -13 39 22 5 42 40.3 68 16 3 -13 46 50 -13 31 56 -13 50 56 -13 27 49 0.39 0 0 0 -14 19 58 5 42 49.4 67 13 4 -14 27 27 -14 12 31 -14 31 34 -14 8 24 0.39 1 0 0 -15 0 46 5 42 58.5 67 10 5 -15 8 16 -14 53 17 -15 12 24 -14 49 10 0.39 2 0 0 -15 41 45 5 43 7.5 66 7 6 -15 49 15 -15 34 15 -15 53 24 -15 30 7 0.39 3 0 0 -16 22 52 5 43 16.4 66 4 8 -16 30 23 -16 15 21 -16 34 33 -16 11 13 0.39 4 0 0 -17 4 7 5 43 25.3 65 2 9 -17 11 39 -16 56 35 -17 15 49 -16 52 26 0.39 5 0 0 -17 45 27 5 43 34.2 64 359 10 -17 53 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43 0 0 -41 2 15 5 47 36.6 29 314 45 -41 9 25 -40 55 6 -41 13 23 -40 51 9 0.38 44 0 0 -41 30 2 5 47 40.1 28 313 46 -41 37 11 -41 22 54 -41 41 7 -41 18 58 0.38 45 0 0 -41 57 15 5 47 43.5 28 312 46 -42 4 22 -41 50 9 -42 8 18 -41 46 14 0.38 46 0 0 -42 23 55 5 47 46.7 27 312 47 -42 31 0 -42 16 50 -42 34 54 -42 12 55 0.38 47 0 0 -42 50 0 5 47 49.8 26 311 48 -42 57 4 -42 42 57 -43 0 58 -42 39 4 0.38 48 0 0 -43 15 32 5 47 52.8 25 310 48 -43 22 34 -43 8 30 -43 26 27 -43 4 38 0.38 49 0 0 -43 40 31 5 47 55.7 24 309 49 -43 47 31 -43 33 31 -43 51 23 -43 29 39 0.38 50 0 0 -44 4 56 5 47 58.4 23 309 49 -44 11 54 -43 57 57 -44 15 46 -43 54 7 0.38 51 0 0 -44 28 48 5 48 1.0 23 308 50 -44 35 45 -44 21 51 -44 39 35 -44 18 1 0.38 52 0 0 -44 52 7 5 48 3.5 22 307 50 -44 59 2 -44 45 12 -45 2 52 -44 41 23 0.38 53 0 0 -45 14 53 5 48 5.9 21 306 51 -45 21 47 -45 7 59 -45 25 35 -45 4 11 0.38 54 0 0 -45 37 7 5 48 8.2 20 306 51 -45 43 59 -45 30 15 -45 47 47 -45 26 27 0.38 55 0 0 -45 58 48 5 48 10.4 19 305 52 -46 5 39 -45 51 58 -46 9 26 -45 48 11 0.38 56 0 0 -46 19 57 5 48 12.5 19 304 52 -46 26 47 -46 13 9 -46 30 33 -46 9 23 0.38 57 0 0 -46 40 35 5 48 14.4 18 303 52 -46 47 23 -46 33 48 -46 51 8 -46 30 3 0.38 58 0 0 -47 0 41 5 48 16.3 17 302 53 -47 7 27 -46 53 55 -47 11 12 -46 50 12 0.38 59 0 0 -47 20 16 5 48 18.1 16 302 53 -47 27 1 -47 13 32 -47 30 44 -47 9 49 0.38 60 0 0 -47 39 20 5 48 19.7 16 301 53 -47 46 3 -47 32 37 -47 49 46 -47 28 55 0.38 61 0 0 -47 57 54 5 48 21.3 15 300 54 -48 4 35 -47 51 12 -48 8 17 -47 47 31 0.38 62 0 0 -48 15 57 5 48 22.8 14 299 54 -48 22 37 -48 9 17 -48 26 18 -48 5 36 0.38 63 0 0 -48 33 30 5 48 24.2 13 299 54 -48 40 8 -48 26 51 -48 43 49 -48 23 12 0.38 64 0 0 -48 50 33 5 48 25.6 13 298 55 -48 57 11 -48 43 56 -49 0 50 -48 40 18 0.38 65 0 0 -49 7 7 5 48 26.8 12 297 55 -49 13 43 -49 0 32 -49 17 22 -48 56 54 0.38 66 0 0 -49 23 13 5 48 28.0 11 296 55 -49 29 47 -49 16 38 -49 33 25 -49 13 1 0.38 67 0 0 -49 38 49 5 48 29.0 11 296 55 -49 45 22 -49 32 16 -49 48 59 -49 28 40 0.38 68 0 0 -49 53 57 5 48 30.0 10 295 55 -50 0 29 -49 47 26 -50 4 5 -49 43 50 0.38 69 0 0 -50 8 37 5 48 31.0 9 294 56 -50 15 7 -50 2 7 -50 18 43 -49 58 32 0.38 70 0 0 -50 22 49 5 48 31.8 9 293 56 -50 29 18 -50 16 20 -50 32 53 -50 12 46 0.38 71 0 0 -50 36 34 5 48 32.6 8 292 56 -50 43 2 -50 30 6 -50 46 36 -50 26 33 0.39 72 0 0 -50 49 52 5 48 33.3 7 292 56 -50 56 18 -50 43 25 -50 59 52 -50 39 52 0.39 73 0 0 -51 2 43 5 48 33.9 6 291 56 -51 9 8 -50 56 17 -51 12 41 -50 52 45 0.39 74 0 0 -51 15 7 5 48 34.5 6 290 56 -51 21 31 -51 8 43 -51 25 4 -51 5 11 0.39 75 0 0 -51 27 5 5 48 35.0 5 289 56 -51 33 28 -51 20 42 -51 37 0 -51 17 11 0.39 76 0 0 -51 38 37 5 48 35.5 5 289 56 -51 44 59 -51 32 15 -51 48 30 -51 28 44 0.39 77 0 0 -51 49 43 5 48 35.8 4 288 57 -51 56 5 -51 43 23 -51 59 35 -51 39 52 0.39 78 0 0 -52 0 24 5 48 36.2 3 287 57 -52 6 45 -51 54 5 -52 10 14 -51 50 35 0.39 79 0 0 -52 10 40 5 48 36.4 3 286 57 -52 16 59 -52 4 21 -52 20 29 -52 0 52 0.40 80 0 0 -52 20 31 5 48 36.6 2 285 57 -52 26 50 -52 14 13 -52 30 18 -52 10 45 0.40 81 0 0 -52 29 58 5 48 36.8 1 285 57 -52 36 15 -52 23 41 -52 39 43 -52 20 13 0.42 82 0 0 -52 39 0 5 48 36.9 1 284 57 -52 45 16 -52 32 44 -52 48 44 -52 29 16 0.45 83 0 0 -52 47 37 5 48 36.9 0 283 57 -52 53 53 -52 41 22 -52 57 20 -52 37 55 1.00 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 490-052578 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 00 13.3954 DE: +07 56 48.491 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 00 13.3956 DE: +07 56 48.490 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.2 * B mag [mag]: 10.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1407) Lindelof asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.011 distance from Earth [AU]: 2.64350 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 date of fit: 2023 Apr 24 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.009", 0.003", 113.256° remarks: * orbital elements for (1407)Lindelof : Mean anomaly = 76.6585956507 deg Arg. of pericenter = 111.2007114373 deg Long. of node = 268.3112128549 deg Inclination = 5.8251058737 deg Eccentricity = 0.2841895519 Semimajor axis = 2.7611185100 AU Perihelion dist = 1.9764374779 AU Mag: H = 10.96, G = 0.15 Epoch of elements : MJD 60634.23742463 TDT (2024 Nov 20.2374) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,1.43,2024,11,20,5.698199,-0.192758,-0.306746,7.038726,-4.406483,-0.005521,0.002025,0.000000,0.000000 5.1752,7.8284,90.94,-19.80,False UCAC4 490-052578,10.00372091,7.9468033,10.46,10.24,10.12,0.0,0,,10.02560192,7.8283580,6.08,5.75,0,0,0 1407,Lindelof,16.32,21.076,2.6435,0,0,1.576,-14.66,,1.4,0 0,76.6076,2024,11,20,111.2007,268.3112,5.8251,0.28419,2.76112,1.97644,10.95,5.0,0.15 1.276,0.0090,0.0027,113,0.0030,Known errors,0.97,0,-1,-1 20241120_052578,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org